Do not spawn a thread in browser/interactive ui tests before spawning sandbox host process

chrome/browser/chromeos/login/screens/update_screen_browsertest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/chromeos/login/screens/mock_error_screen.h"
 #include "chrome/browser/chromeos/login/screens/mock_screen_observer.h"
 #include "chrome/browser/chromeos/login/screens/update_screen.h"
 #include "chrome/browser/chromeos/login/wizard_controller.h"
@@ skipping 31 matching lines @@
 
  protected:
   virtual void SetUpInProcessBrowserTestFixture() OVERRIDE {
     FakeDBusThreadManager* fake_dbus_thread_manager =
         new FakeDBusThreadManager;
     fake_dbus_thread_manager->SetFakeClients();
     fake_update_engine_client_ = new FakeUpdateEngineClient;
     fake_dbus_thread_manager->SetUpdateEngineClient(
         scoped_ptr<UpdateEngineClient>(fake_update_engine_client_));
 
-    DBusThreadManager::InitializeForTesting(fake_dbus_thread_manager);
+    DBusThreadManager::SetInstanceForTesting(fake_dbus_thread_manager);
     WizardInProcessBrowserTest::SetUpInProcessBrowserTestFixture();
 
     // Setup network portal detector to return online state for both
     // ethernet and wifi networks. Ethernet is an active network by
     // default.
     network_portal_detector_ = new NetworkPortalDetectorTestImpl();
     NetworkPortalDetector::InitializeForTesting(network_portal_detector_);
     NetworkPortalDetector::CaptivePortalState online_state;
     online_state.status = NetworkPortalDetector::CAPTIVE_PORTAL_STATUS_ONLINE;
     online_state.response_code = 204;
@@ skipping 321 matching lines @@
       chromeos::UpdateEngineClient::UPDATE_RESULT_FAILED);
   EXPECT_CALL(*mock_screen_observer_,
               OnExit(ScreenObserver::UPDATE_ERROR_CHECKING_FOR_UPDATE))
       .Times(1);
 
   update_screen_->OnConnectToNetworkRequested(kStubEthernetServicePath);
   base::MessageLoop::current()->RunUntilIdle();
 }
 
 }  // namespace chromeos